Ore-crusher



4 Sheets-Sheet 1.

(No Model.)

o. KAESTNBR.

URE GRUSHER;

INVENTOR I l ,/M-M dma s Q w. u Q k du.

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(No Model.) 4 Sheets-Sh-ee G. KAESTNER.

ORE GRUSHER.

No. 877,459. Ef Patented Peb. 7, 1888.

WITNESSES: i INVENTOR' Mf@ l Exe/Lame MLU) ATTORNEY 4 Sheets-Sheet 14. z

`(No Model.) I

c. KABSTNER.

ORB GRUSHBR. No. 377,459. Patented Feb. 7, 1888.

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' iinrrnn STATES PATENT Orrrcn. l

oHARLEs KAEsTNEaoE CHICAGO, ILLINOIS'. .Y 5

oRE-oRusi-iER.y

rS'PIElCIPICATION forming part of Letters Patent No. 377,459, dated February?, 18788.

Application filed May 24. 1884.

To all whom/'it may concern,.- y

Be it known that I, CHARLEs KAESTNER, a

y citizen of the United States, residing at Ghicago, in the county of Cook and State of /Illinois, have invented certain new and useful Improvementsin OreCrushers, of which the following is a specification, to Wit:

This invention relates to an improvement in ore-Crushers; and it consists in certain peculiarities of the construction and combinations of parts, substantially as will be hereinafter more fully described and claimed.

In order to enable others skilled in the fart' to which my invention appertains to make and use the same, I` will now proceed to describe its construction and operation, referring to the accompanying drawings, in which-4' Figure lV isa top plan view, partly in section, of my improved crusher. Figs. 2 and 3 are reverse end elevations of the same, Fig. et`

is a longitudinal vertical section taken on thev line :u x, Fig. 5; and Fig. is a transverse section, taken onthe line y y, Fig. 4,70 the machine as -I prefer to construct it. Fig. 6 represents the manner of journaling the crush- Resting upon and driven by the four rollers i A2 is'a large cylinder, B. This cylinder is peculiarl y constructed, its-central portion being formed of two annular flanges, b, placed a short distance apart and covered with Wirenetting, as Vrepresented at b in Figs. 4 and l. The tlanged plates b are connected and held rigidly in place-by lbolts c, and 'at or near their peripheriesare provided with aseries of buckets, c, somewhat like the usual elevator-buck ets, the purpose of which'will bepresently explained. Upon each side of the iianged plates b the cylinder is formed of broad rings Serial No. 132,673. (No model.)

b, bolted to the Yflanges andv having small in; ward anges b3 upon theirouter sides, their ends being closed by wood or metalplates- C,

supported 'on the mainA framein any suitable way. "The inner surfaces of .the rings b2 are end of which is journaled a shaft, D', extend` hard lfaces upon which Lthe n ing through the cylinder and carrying withiny ^the same two chilled rolls, D2, whichlie in' oloserelation to the chilled surfaces of the cylinder-ringsy and serve as crushing-rolls, as y will be presently explained. ,The shaft D is A p driven bya gear, ,thereon at each end, mesh-k ing with similar gears, c?, upon the main driv' ing-shaft, andthe upper ends of the hinged arms D rest upon the yset-screws d', bywhi'ch the lshaft and its rolls are adjusted to runat i any suitable distance from the chilled face of the cylinder, and thereby regulate the extent to whichy the'ore is pulverized. A secondA shaft, E, passes through the'cylinder just inv rear of the one just described, carrying rolls E, journaled in the ends of jointed larms E,

projecting from the arms D, and also adjusted'y to and from the cylinder by adjusting-screws e, as clearly seenin Figs. 2, 3, and 6'.

The bearing of each of the shafts D Eisn .y provided upon eachendwith an arm, F, upon`v which is an adjustable weight, f, for regulating n theppressure of the rolls upon the ore.A

` J ournaledin the main frame, in rear of the crushin'gsrolls, is a shaft, G, upon which is se# cured a right and left hand conveyer-screw,

G', which conveys the crushed material from each end ofthe cylinder to the central screen.

This shaft is at one end provided with a pulley, y, connected by a belt, g', with a similar pulley, g2, upon the "shaft A3.

The ore is passedintoy the cylinder through l Y* a hopper, H, at each end, (shownin Fig. 4,)

and an inclined board, H, is secured inthe cylinder B, as in Figs. 4 and 5, having laterally-inclined extensions H2, which direct theore therefrom bac-k to the crushingfrolls uponeach side of the machine. f

Below the center of the machine, under the j cylindrical screen, is a spout, I, through whichv the crushed material which passes through said screen/'fis carried away. `This'.spouthasf r` its upper edges secured to large circularpartitions or rings which run in annulargrooves i, formed in the edges ofthe flanges b, and prevents the escape of dust, making a dust-tight joint without excessive friction of the parts, as will be seen at once.

The whole machine is inclosed by a casing, K, and the dust is confined therein. g

' In operation the ore is fed into the machine at each end through the hoppers H and falls in front ofthe crushing-rolls D2. These rolls are constantly revolving,as is also the main cylinder B, and the ore passing between the chilled inner face of this cylinder and the rolls is crushed. rlhe other rolls, E', nish the crushing, and the material is then carried from each side to the central screen by the right and left hand conveyer G. Such portion of the ore as is properly crushed passes through the meshes of this screen and oi through the spout I, while the larger particles are caught by the elevator-buckets within the screenchamber and carried up to the top of the cylinder, where they dropupon the incline II', and are by this and its lateral extensions directed to each side of the machine in front of the crushing-rolls, under which they are again passed and the crushing completed. The rolls are adj usted readily by means of thin screws d e, to regulate the size to which the ore is reduced, and the amount of power governed by moving the weights ff to and fro upon the arms F.

'Ihe cylinder B being provided with small inwardly-proj ecting flanges upon its ends, the ore is kept from contacting with and wearing the stationary end boards, C, and the cylinder itself i's held steady and prevented from slipping endwise upon its supporting and driving rollers by annular shoulders m m, formed upon Y the cylinder, as in Fig. 4i.

It is evident that a machine of smaller capacity, but embodying the same principles of construction and operation, could be used by omitting one end of the' cylinder and its accompanying parts, and simply using one end with its crushing-rolls and the flanged or enlarged screen-chamber.

rlhe whole machine being cased in, the dust is confined within the casing and cannot escape. is where the spout I passes through it, and

this spout being iitted in the grooved edges of y the screening enlargement, the dust is not allowed to escape even at this point. This is also the point at which the dust rises in the greatest volume7 because of the finely-crushed material falling over and upon the meshes of the wire, as will be seen at once.

Having thus fully described my invention,

what I claim as new, and desire to secure by Letters Patent, is

l. In an ore-Crusher, the combination of a main frame, four rollers journaled therein and connected by driving-belts, a rolling cylinder supported upon and driven by said The only material break in this casing rollers, an annular screening-chamber forming the central portion of said cy1inder,crush ing rolls located in each end thereof and geared together, and means for feeding the crushed ore from the ends of the cylinder to its central screen, substantially as and for the purpose set forth.

2. In an ore-pulverizer, the combination of the main frame, a rolling crushingcylinder, crushing-rolls therein, shafts, journal-boxes, arms hinged upon the main frame, and weighted arms connected with said journals, whereby the rolls are pressed upon the inner surface of the cylinder, substantially as and for the purpose set forth.

3. In an. OrecruSher, the main frame and a rolling cylinder within which the ore is` crushed, in combination with a pair of crushing-rolls, journal-boxes, arms hinged on the main frame, a second pair of rolls, journalboxes therefor, jointed arms connecting thev two pairs ofjournalboxes, and weighted arms secured to the journal-boxes of cach roll to press them down upon the inner surface of the cylinder, substantially as and for the purpose set forth.

4. In an orecrusher, the combination of a main frame, a casing, a rolling crushing-cylinder formed with l annular grooves, and a spout having its upper edges running in said grooves, whereby the dust is prevented from escaping from the machine, substantially as and for the purpose set forth.

5. In an ore-Crusher, a rolling cylinder provided with a central enlargement covered by wire-netting, and a pair of crushing-rolls located within the cylinder,in combination with a right and left hand conveyer located in rear of the crushing-rolls and adapted to carry the crushed material from the ends of the cylinder to the central screen, substantially as shown and described.

6. In an ore-crusher, the combination of the rolling cylinder B, the crushing-rolls D", the arms D, hinged upon the main frame, the Weighted arms F, secured to the journals of said crushing-rolls, and the setscrews d', all constructed and arranged to operate substantially as and for the purpose set forth.

7. In an ore-Crusher, the combination of a rolling cylinder having a centra-l enlargement covered with wire-netting, ledgesor buckets within said enlargement, crushing-rolls Working against the inner surface of the cylinder, a right and left hand conveyer for carrying the crushed orc to the screeningchamber, and an incline to receive the crushed orcA carried up by the buckets and return it to the crushingrolls, substantially as andV for the purpose set forth.

In testimony whereof I aliix my signature in presence of two witnesses.

CHARLES KAESTNER.

qWitnesses: v

W. C. McARri-IUR, Cults. KREssMANN.

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